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 AMPHF - KPA500 RF Power Monitor 
- KPA500 RF Power Monitor — Real-Time OLED Display for Elecraft KPA500
Six critical parameters, always visible, updating 10×/second on a high-contrast 256×64 OLED. No menu cycling. No squinting.
Monitors: Power Output (0–700W) · PA Voltage · PA Current · SWR · PA Temperature · Band + Operate/Standby
3×2 grid layout — large fonts sized for quick reading across the shack.
Direct RS-232 integration via MAX3232 — no amplifier modification required.
Specs: XIAO ESP32-C3 · SSD1322 256×64 OLED · 9–14.8V DC · 100mA · 10 Hz update rate · 4″ × 2″ × 4″
Bonus: Built-In WiFi — web interface mirrors the OLED with a retro green-on-black aesthetic, updated via WebSocket. Includes Power, Operate/Standby, Fan Speed, and Band controls plus OTA firmware updates. Access via kpa500.local — no app required. OLED operates independently of WiFi at all times.
Includes: Assembled & tested unit, DC power cable, RS-232 cable, quick start guide.
--$199 plus $10 shipping
- Listing #1763890 - Submitted on 04/02/26 by Callsign KV5J, Web Site: http://www.kv5j.com - IP: customer.mmmiflx1.isp.starlink.com
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- MISC - QSK-5
- I wish to sell an Ameritron QSK-5 T/R switch that I no longer need. These are no longer available from the manufacturer. The original cost was $379.00 but I am willing to accept a reasonable offer. I have two of these switches for sale. PayPal preferred.
- Listing #1763888 - Submitted on 04/02/26 by Callsign K1MZM - IP: 69-53-40-228.burlvt.fidium.ccidns.net
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 RADIOHF - WTB: Kenwood VFO-230 and SP-230
- Looking to buy a Kenwood VFO-230 and a SP-230
Speaker to match the TS-830s transceiver. Must be in good condition. Please send photos along with prices. I’ll only respond to emails through qth or texts. Thanks and 73’s W4EKY
- Listing #1763059 - Submitted on 03/24/26 by Callsign W4EKY, Modified on 04/02/26 - IP: 173.80.201.26
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- MISC - Flex Control
- I wish to sell a Flex Radio Controller that I no longer need. The retail price is $200 and I wish to sell this one for $125 shipped. PayPal preferred but I will consider other forms of payment.
- Listing #1763886 - Submitted on 04/02/26 by Callsign K1MZM - IP: 69-53-40-228.burlvt.fidium.ccidns.net
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- MISC - 300 Hz Filter for Yaesu FTDX10
- I sold my FTDX10 and the buyer did not want the 300 Hz roofing filter. I paid $200 for the filter and I would like to sell it for $150 shipped.
PayPal preferred but will consider all other forms of payment.
- Listing #1763885 - Submitted on 04/02/26 by Callsign K1MZM - IP: 69-53-40-228.burlvt.fidium.ccidns.net
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- TEST - MFJ 891 Wattmeter
- Here is a MFJ 891 giant HF wattmeter that is in excellent condition. It is a great addition for your shack and is ideal for someone that has low vision. I am asking $80 shipped to the lower 48 states. You can email me at rolph981 at gmail.com or text me at (859) 967-9562. I accept PayPal or a money order. Thank you for looking.
- Listing #1763884 - Submitted on 04/02/26 by Callsign KB4QNR - IP: 46-110-130-0-194.metronet.net
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- MISC - Bencher BY-1 Key with Case
- Offering a Bencher dual-lever iambic paddle key with black powder-coated solid steel base. Features adjustable spring tension and contact spacing. Key is in mint condition and works perfectly. It includes the allen wrench used for making adjustments. I was going to use this key for POTA which is why it is wired with a 3.5mm female plug and has a hard-shell carrying case, but it never made it out into the field.
The key itself weighs approximately 3 lbs, which provides stability while in use. The top just slides over the base on the hard case and needs to be secured during transport; it will be held together with rubber bands for shipping.
$125 shipped CONUS. PayPal F&F (NO G&S), check, money order; held until funds clear. All sales final, no returns.
- Listing #1763829 - Submitted on 04/01/26 by Callsign K8MDG, Modified on 04/02/26 - IP: 172.58.120.44
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- RADIOVHF - Kenwood TM G707 mobile
- Here is a nice dual band mobile .This radio is in very good condition and will include the microphone and mounting bracket. The radio functions as it should and has very good audio quality. Asking $150 shipped to the lower 48 states. Thank you for looking. you may email me here on QTH or text me at 859-967-9562.
- Listing #1763883 - Submitted on 04/02/26 by Callsign KB4QNR - IP: 46-110-130-0-194.metronet.net
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- ANTETUNE - MFJ 941D Tuner (Versa II)
- From a health-challenged ham's shack. Works as it should, but no backlight for the meter. I don't even see where a wal-wart would plug in, nor a 12 VDC to run a light. Has built-in Instructions on the bottom, covered with clear tape. Looks kinda rough, bUt it does work. SOLD AS-IS/NO RETURNS/NO EXCHANGES/NO WARRANTY. We (our club) used this last year for ARRL FD. I accept Zelle, PayPal F/F, MO's, and Checks (ships when check clears, about 3 business days) MO's received shipped in ONE DAY after receipt. Contact me 1st with payment method. $90 with ground shipping, or $100 with priority mail shipping (Priority USPS has taken an extra 1-3 days to arrive lately for my last 2 customers, so your choice). Call/Text 406-459-9972, 7A-9P, MDST, my e-mail is good here, and QRZ, or just message me thru QTH. More pics on QRZ. Thanks!
- Listing #1763814 - Submitted on 04/01/26 by Callsign AB5ZA, Modified on 04/02/26 - IP: node-154-27-111-34.theglobal.net
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- RADIOHF - Yaesu FT-2000D 200 Watt w/ power supply
- This radio is at my daughter's home in E Wenatchee Wa.i have been off air for a couple years. Radio works as it should. In perfect working order. No issues at all.im in so california and looking to just sell it. Hopefully someone in Eastern Washington may like to buy it because she will not go thru the hoops of packaging and shipping the radio.
So local pickup only unless you want to pay for packing and shipping. It's quite heavy!! Asking $1000 firm. If interested in can have her take a couple pictures. Would consider a trade for an FTDX 10 as well.
Let me know if you have an interest.
- Listing #1763820 - Submitted on 04/01/26 by Callsign W9SSS, Modified on 04/02/26 - IP: syn-076-053-023-034.biz.spectrum.com
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